Alluxa bandpass filter

Alluxa bandpass filterWith advanced design technology and coating process control, Alluxa filters have high transmittance, high cut-off depth, and wavelength accuracy in the industry, including SIRRUS ™ The ion beam deposition hard coating technology also enablesAlluxa bandpass filterIt has the characteristics of long service life, high damage threshold, and high batch stability, and has been widely used in precision optical systems such as biological fluorescence systems, Raman systems, quantum, radar communication, etc.

Alluxa not only offers a wide range of standard products, but also provides customized services, and the cost of customization is quite competitive in the industry.

ULTRA series bandpass filter

Figure 1. Various ULTRA series bandpass filters display high transmittance from ultraviolet to infrared.

By combining precise wavelength control, ultra steep edges, deep blocking, and industry-leading transmission levels, Alluxa's ULTRA series hard coated thin film optical bandpass filters will optimize the performance of various instruments.

Each ULTRA series bandpass filter is designed to exceed the requirements of advanced instruments. All products undergo rigorous testing to ensure that filter performance meets or exceeds challenging specifications.

The ULTRA series bandpass filters are highly suitable for applications such as fluorescence microscopy, flow cytometry, Raman spectroscopy, LiDAR, and spectroscopic imaging. Provide single band, multi band, broadband, ultra narrowband, and narrowband filters.

According to the wavelength range and requirements of the system, ULTRA series bandpass filters can be customized to meet one or more challenging specifications, including:

▪ The transmittance can reach 99%

▪ Up to 99% transmission for passbands in the visible range

▪ By designing to achieve a depth of up to OD10

▪ Up to OD10 wide range out of band blocking by design

▪ 陡度： 0.5% CWL @ 50%T～OD6

▪ Edge transitions as steep as 0.5% of CWL from 50% T to OD6

▪ Wavelength range 250nm~13 µ m optional

▪ CWL at any wavelength from the UV to the mid IR (～250 nm to 13 µm)

▪ Wavelength accuracy error ± 0.25% CWL

▪ Tolerances as tight as ± 0.25% of CWL

▪ Transmitting wavefront difference (RMS): Excellent 0.01 λ per inch @ 632.8 nm

▪ TWE as low as 0.01 wave RMS/inch measured at 632.8 nm

Multi band filter for fluorescence applications

Figure 2. ULTRA series multi band filters with steep edges, high transmission, and OD6 out of band cutoff.

The ULTRA series multi band pass filter can be designed with more than 10 transmission bands, with OD values greater than 8 between bands, ultra-high cutoff steepness, and a transmittance of up to 98%. They are highly suitable for use as excitation or emission filters in fluorescence technology, requiring the simultaneous detection of multiple fluorescent groups in a single sample.

The quality and consistency brought by innovative thin film coating technology

Figure 3. The wavelength control, transmission, and cutoff of ULTRA series filters have high repeatability in several different coating operations.

Alluxa thin film filters and dielectric mirrors both use our SIRRUS ™ The ion beam deposition hard coating technology enables us to reliably reproduce the same high-performance thin film bandpass filter in multiple different coating operations, which means that the performance of all your systems remains consistent.

Single band bandpass filter